Sony Bluetooth Premium Active Sport Series Lightweight Extra Bass Noise-Cancelling Earbud Headphones for Apple Iphone/Android Smartphone (White) Bluetooth - Enjoy high quality Bluetooth audio streaming and simplified connectivity with Near Field Communications (NFC) technology. Simply align your compatible devices and touch the NFC logos to activate or deactivate pairing. With built-in AAC and apt-X codec support, you will benefit from maximized signal quality when streaming your music wirelessly Water-Resistant - The water resistant housing prevents sweat and water from leaking in, making these headphones ideal for an active lifestyle Extra Bass Design - A tightly sealed acoustic design allows for a high level of sound isolation which aides in the reproduction of powerful and extended bass response 2-way wearing style - Enjoy flexible wearing convenience: conventional Easy-Fit (in-ear) fashion for around the town, or using the attached arc supporters in Secure Fit Loop (Active-Sports) style, the cables run up and over each ear and then behind the neck for a more secure fit when activities ensue Supplied Accessories - A carrying case, micro-USB charging cable, 4 sizes of hybrid silicone earbuds and 3 sizes of arc supporters, and an adjustment band are supplied to ensure optimum fit and an enhanced experience